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Mount crankshaft radially in bearings - AR03.20-P-4355-01L

TEST AND ADJUSTMENT VALUES

Number Designation Engine 137
BE01.40-P-1001-02G Crankshaft bearing Basic bore Ø mm 68.500 to 68.519
  Code number 52 1st stage blue mm 68.500 to 68.506
Code number 54 2nd stage yellow mm 68.506 to 68.513
  Code number 56 3rd stage red mm 68.513 to 68.519
Basic bore width at fit bearing mm 17.073 to 18.00
Permissible out-of-roundness and conicity of basic bore mm 0.02
TEST AND ADJUSTMENT VALUES

Number Designation Engine 275, 285
BE01.40-P-1001-02G Crankshaft bearing Basic bore Ø mm 68.500 to 68.519
  Code number 52 1st stage blue mm 68.500 to 68.506
Code number 54 2nd stage yellow mm 68.506 to 68.513
  Code number 56 3rd stage red mm 68.513 to 68.519
Basic bore width at fit bearing mm 19.967 to 20.00
Permissible out-of-roundness and conicity of basic bore mm 0.02
CHECK VALUES FOR CRANKSHAFT MAIN BEARING SHELLS

Number Designation Engine 137 Engine 275.950/951/953/954, 285.950
BE03.20-P-1001-03E Main bearing shells standard size for upper crankcase section and crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding blue) 52 52
Bearing shell thickness mm 2.252 to 2.257 2.255 to 2.262
BE03.20-P-1002-03E Main bearing shells standard size for upper crankcase section and crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding yellow) 54 54
Bearing shell thickness mm 2.257 to 2.262 2.260 to 2.267
BE03.20-P-1003-03E Main bearing shells standard size for upper crankcase section and crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding red) 56 56
Bearing shell thickness mm 2.262 to 2.267 2.265 to 2.272
BE03.20-P-1004-03E Main bearing shells standard size for crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding white) 57 57
Bearing shell thickness mm 2.267 to 2.272 2.270 to 2.277
BE03.20-P-1005-03E Main bearing shells standard size for crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding purple) 58 58
Bearing shell thickness mm 2.272 to 2.277 2.275 to 2.282
CHECK VALUES FOR CRANKSHAFT MAIN BEARING SHELLS

Number Designation Engines 275.980/981 982/983/, 285.980
BE03.20-P-1001-03E Main bearing shells standard size for upper crankcase section and crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding blue) 52
Bearing shell thickness mm 2.252 to 2.257
BE03.20-P-1002-03E Main bearing shells standard size for upper crankcase section and crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding yellow) 54
Bearing shell thickness mm 2.257 to 2.262
BE03.20-P-1003-03E Main bearing shells standard size for upper crankcase section and crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding red) 56
Bearing shell thickness mm 2.262 to 2.267
BE03.20-P-1004-03E Main bearing shells standard size for crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding white) 57
Bearing shell thickness mm 2.267 to 2.272
BE03.20-P-1005-03E Main bearing shells standard size for crankcase bottom section main bearing bore dia.68.5 mm Replacement part additional number (color coding purple) 58
Bearing shell thickness mm 2.272 to 2.277
TEST SPECIFICATIONS FOR CRANKSHAFT BEARING CLEARANCE

Number Designation Engine 137 Engines 275.95, 285.95 Engines 275.98, 285.98
BE03.20-P-1001-04E Main bearing play Radial measurement new mm 0.028 to 0.052 0.022 to 0.047 0.018 to 0.058
Axial measurement when new mm 0.10 to 0.260 0.100 to 0.254 0.100 to 0.254
CRANKCASE, TIMING CASE COVER, END COVER

Number Designation Engine 137 Engine 275, 285
BA01.40-P-1008-01C Bolt, crankcase bottom section to top part 1-14 M10 Stage 1 Nm 40 40
Stage 2 ∠° 90 90
15-28 M8 Stage 1 Nm 12 12
Stage 2 ∠° 90 90
Stage 3 ∠° 90 90
29-54 M6 Stage 1 Nm 8 8
Stage 2 ∠° - -
55-61 M8 Stage 1 Nm 20 20
Stage 2 ∠° - -
  See picture - -
Fig 1: Identifying Dial Indicator (001 589 53 21 00)
G07504275Courtesy of MERCEDES-BENZ USA
  1. 1 Mount lower crankcase section (1).
    Fig 2: Identifying Lower Crankcase Section
    G07511264Courtesy of MERCEDES-BENZ USA

    Measurement without bearing shells for determining thickness of bearing shell 

  2. 2.1 Measure crankshaft bearing bore in direction A, B and C at two levels (out-of-roundness).
    Fig 3: Identifying Crankshaft Bearing Bore Measuring Directions (Measurement Without Bearing Shells)
    G07511265Courtesy of MERCEDES-BENZ USA
    Fig 4: Measuring Crankshaft Bearing Bore (Measurement Without Bearing Shells)
    G07511266Courtesy of MERCEDES-BENZ USA

    Measurement with bearing shells for determining radial bearing clearance 

  3. 2.2 Measure crankshaft bearing bore in direction A, B and C at two levels (out-of-roundness).
  4. 3.1 Measure crankshaft bearing bore, without bearing shells, in direction A, note measurement, example: 68.51 mm.
  5. 3.2 Measure crankshaft bearing bore, without bearing shells, in direction A, note measurement, example: 64 mm.
  6. 4 Detach lower crankcase section (1).
    Fig 5: Identifying Crankshaft Bearing Bore Measuring Directions (Measurement With Bearing Shells)
    G07511267Courtesy of MERCEDES-BENZ USA
    Fig 6: Identifying Crankshaft Bearing Bore Measuring Directions (Measurement With Bearing Shells)
    G07511266Courtesy of MERCEDES-BENZ USA
  7. 5 Measure crankshaft bearing journal dia.example: 63.95 mm
  8. 6.1 Determine bearing shell thickness 
    Example:  
    Bearing bore dia. 68.51 mm
    Crankshaft journal dia. -63.95 mm
      4.56 mm
    Radial bearing play: dia. -0.04 mm
    Check values → table "crankshaft bearing play"  
      4.52 mm : 2
    Bearing shell thickness 2.26 mm
  9. 6.2 Determine radial bearing clearance 
    Example:  
    Bearing bore dia. 64.00 mm
    Crankshaft journal dia. -63.95 mm
    Radial bearing play: 0.05 mm
    Fig 7: Measuring Crankshaft Bearing Journal Diameter
    G07511269Courtesy of MERCEDES-BENZ USA
  10. 7 Assign bearing shells (only for standard dimension crankshaft)

    Example:

    Bearing shell thickness 2.26 mm → chart "test values of crankshaft bearing shells"

    Upper bearing shell "yellow"

    Lower bearing shell "yellow"

    IMPORTANT If the thickness of the bearing shell differs, install thicker bearing shell in lower crankcase section (1).

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